Corals are marine animals from the class Anthozoa and exist as small sea anemone-like polyps, typically in colonies of many identical individuals. The group includes the important reef builders that are found in tropical oceans, which secrete calcium carbonate to form a hard skeleton.

When buying any sort of coral for a reef tank it is important to make sure that the coral was sourced from sustainably managed wild stocks or aquacultured corals. Remember if these corals are not looked after they will not be there in the future.